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How to calculate the tx noise?

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ttrf

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rf design

how calculate tx noise?
 

noise floor was more concerned in TX.
 

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how calculate it?
 

What's mean of TX noise?
 

Why need it?

In most cases, the TX NF is not important. So it's hard to calculate it than RX. :roll:
 

same as rx

You do the calculations of the stages in cascade just like receiver calculations. Then you calculate the input noise power spectral density (-174 dBm/Hz +noise figure) and multiply by the gain. This will give you the output noise. This is shaped by the filters. In general power FETs are quiter than BJTs.
 

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